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Saving grid.arrange() plot to file
...t2, plot3, nrow=3) #generates g
ggsave(file="whatever.pdf", g) #saves g
Now it works for me fine.
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Can I get a list of files marked --assume-unchanged?
...s snippet:
[alias]
ignored = !git ls-files -v | grep "^[[:lower:]]"
Now typing git ignored will give you output like this:
h path/to/ignored.file
h another/ignored.file
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Which data type for latitude and longitude?
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If you do not need all the functionality PostGIS offers, Postgres (nowadays) offers an extension module called earthdistance. It uses the point or cube data type depending on your accuracy needs for distance calculations.
You can now use the earth_box function to -for example- query for poi...
.gitignore file, where should I put it in my xcode project?
...ory and activate it:
git config --global core.excludesfile ~/.gitignore
Now you can put whatever files are generated by your development tools into your .gitignore file.
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How to read XML using XPath in Java
...ith this code:
expr.evaluate(doc, XPathConstants.STRING);
If you don't know how many URLs are in a given node, then you should rather do something like this:
XPathExpression expr = xpath.compile("/howto/topic[@name='PowerBuilder']/url");
NodeList nl = (NodeList) expr.evaluate(doc, XPathConstants...
When should I use double instead of decimal?
..., try reading the oft-quoted article What Every Computer Scientist Should Know About Floating-Point Arithmetic.
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Is SQL or even TSQL Turing Complete?
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Strictly speaking, SQL is now a turing complete language because the latest SQL standard includes the "Persistent Stored Modules" (PSMs). In short, a PSM is the standard version of the PL/SQL language in Oracle (and other similar procedural extensions...
Python: Select subset from list based on index set
... @PreludeAndFugue: If there are two equivalent options it's good to know which one is faster, and use that one right away.
– fuenfundachtzig
Jul 5 '10 at 11:42
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How do you commit code as a different user?
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@Tim Henigan: It looks like documentation is now hosted on Github so the man page link you posted is dead. Can you confirm the new page is the same thing (in case there are other answers that need links updated)?
– R0MANARMY
Feb 6...
How to find out which JavaScript events fired?
...tion on the far right - double chevron)
Expand the event listeners option
Now you can see the events bound to the upvote
Not sure if it's quite as powerful as the firebug option, but has been enough for most of my stuff.
Another option that is a bit different but surprisingly awesome is Visual Ev...